The almost three-minute clip was released Monday just five days after the singer announced she had teamed up with RCA Records to launch a new record, her first since 2007's Dignity.
The video for Duff's peppy first track finds the singer bored in an office while day-dreaming of what it would be like to go on a relaxing vacation.
Chasing The Sun was released for digital download on Monday as well.
2014: NFL Cheerleaders [PHOTOS]
Alanis Morisette debuts new blonde hair